[net-next-2.6.git] / include / linux / auto_fs4.h

/* -*- c -*-
 * linux/include/linux/auto_fs4.h
 *
 * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
 *
 * This file is part of the Linux kernel and is made available under
 * the terms of the GNU General Public License, version 2, or at your
 * option, any later version, incorporated herein by reference.
 */

#ifndef _LINUX_AUTO_FS4_H
#define _LINUX_AUTO_FS4_H

/* Include common v3 definitions */
#include <linux/types.h>
#include <linux/auto_fs.h>

/* autofs v4 definitions */
#undef AUTOFS_PROTO_VERSION
#undef AUTOFS_MIN_PROTO_VERSION
#undef AUTOFS_MAX_PROTO_VERSION

#define AUTOFS_PROTO_VERSION		5
#define AUTOFS_MIN_PROTO_VERSION	3
#define AUTOFS_MAX_PROTO_VERSION	5

#define AUTOFS_PROTO_SUBVERSION		1

/* Mask for expire behaviour */
#define AUTOFS_EXP_IMMEDIATE		1
#define AUTOFS_EXP_LEAVES		2

#define AUTOFS_TYPE_ANY			0U
#define AUTOFS_TYPE_INDIRECT		1U
#define AUTOFS_TYPE_DIRECT		2U
#define AUTOFS_TYPE_OFFSET		4U

static inline void set_autofs_type_indirect(unsigned int *type)
{
	*type = AUTOFS_TYPE_INDIRECT;
	return;
}

static inline unsigned int autofs_type_indirect(unsigned int type)
{
	return (type == AUTOFS_TYPE_INDIRECT);
}

static inline void set_autofs_type_direct(unsigned int *type)
{
	*type = AUTOFS_TYPE_DIRECT;
	return;
}

static inline unsigned int autofs_type_direct(unsigned int type)
{
	return (type == AUTOFS_TYPE_DIRECT);
}

static inline void set_autofs_type_offset(unsigned int *type)
{
	*type = AUTOFS_TYPE_OFFSET;
	return;
}

static inline unsigned int autofs_type_offset(unsigned int type)
{
	return (type == AUTOFS_TYPE_OFFSET);
}

static inline unsigned int autofs_type_trigger(unsigned int type)
{
	return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET);
}

/*
 * This isn't really a type as we use it to say "no type set" to
 * indicate we want to search for "any" mount in the
 * autofs_dev_ioctl_ismountpoint() device ioctl function.
 */
static inline void set_autofs_type_any(unsigned int *type)
{
	*type = AUTOFS_TYPE_ANY;
	return;
}

static inline unsigned int autofs_type_any(unsigned int type)
{
	return (type == AUTOFS_TYPE_ANY);
}

/* Daemon notification packet types */
enum autofs_notify {
	NFY_NONE,
	NFY_MOUNT,
	NFY_EXPIRE
};

/* Kernel protocol version 4 packet types */

/* Expire entry (umount request) */
#define autofs_ptype_expire_multi	2

/* Kernel protocol version 5 packet types */

/* Indirect mount missing and expire requests. */
#define autofs_ptype_missing_indirect	3
#define autofs_ptype_expire_indirect	4

/* Direct mount missing and expire requests */
#define autofs_ptype_missing_direct	5
#define autofs_ptype_expire_direct	6

/* v4 multi expire (via pipe) */
struct autofs_packet_expire_multi {
	struct autofs_packet_hdr hdr;
        autofs_wqt_t wait_queue_token;
	int len;
	char name[NAME_MAX+1];
};

union autofs_packet_union {
	struct autofs_packet_hdr hdr;
	struct autofs_packet_missing missing;
	struct autofs_packet_expire expire;
	struct autofs_packet_expire_multi expire_multi;
};

/* autofs v5 common packet struct */
struct autofs_v5_packet {
	struct autofs_packet_hdr hdr;
	autofs_wqt_t wait_queue_token;
	__u32 dev;
	__u64 ino;
	__u32 uid;
	__u32 gid;
	__u32 pid;
	__u32 tgid;
	__u32 len;
	char name[NAME_MAX+1];
};

typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
typedef struct autofs_v5_packet autofs_packet_expire_direct_t;

union autofs_v5_packet_union {
	struct autofs_packet_hdr hdr;
	struct autofs_v5_packet v5_packet;
	autofs_packet_missing_indirect_t missing_indirect;
	autofs_packet_expire_indirect_t expire_indirect;
	autofs_packet_missing_direct_t missing_direct;
	autofs_packet_expire_direct_t expire_direct;
};

#define AUTOFS_IOC_EXPIRE_MULTI		_IOW(0x93,0x66,int)
#define AUTOFS_IOC_EXPIRE_INDIRECT	AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_EXPIRE_DIRECT	AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_PROTOSUBVER		_IOR(0x93,0x67,int)
#define AUTOFS_IOC_ASKUMOUNT		_IOR(0x93,0x70,int)


#endif /* _LINUX_AUTO_FS4_H */
Commit	Line	Data
1da177e4 LT	1	/* -- c --
	2	* linux/include/linux/auto_fs4.h
	3	*
	4	* Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
	5	*
	6	* This file is part of the Linux kernel and is made available under
	7	* the terms of the GNU General Public License, version 2, or at your
	8	* option, any later version, incorporated herein by reference.
	9	*/
	10
	11	#ifndef _LINUX_AUTO_FS4_H
	12	#define _LINUX_AUTO_FS4_H
	13
	14	/* Include common v3 definitions */
5d461bfe	15	#include <linux/types.h>
1da177e4 LT	16	#include <linux/auto_fs.h>
	17
	18	/* autofs v4 definitions */
	19	#undef AUTOFS_PROTO_VERSION
	20	#undef AUTOFS_MIN_PROTO_VERSION
	21	#undef AUTOFS_MAX_PROTO_VERSION
	22
5c0a32fc	23	#define AUTOFS_PROTO_VERSION 5
1da177e4	24	#define AUTOFS_MIN_PROTO_VERSION 3
5c0a32fc	25	#define AUTOFS_MAX_PROTO_VERSION 5
1da177e4	26
8d7b48e0	27	#define AUTOFS_PROTO_SUBVERSION 1
1da177e4 LT	28
	29	/* Mask for expire behaviour */
	30	#define AUTOFS_EXP_IMMEDIATE 1
	31	#define AUTOFS_EXP_LEAVES 2
	32
a92daf6b IK	33	#define AUTOFS_TYPE_ANY 0U
	34	#define AUTOFS_TYPE_INDIRECT 1U
	35	#define AUTOFS_TYPE_DIRECT 2U
	36	#define AUTOFS_TYPE_OFFSET 4U
	37
	38	static inline void set_autofs_type_indirect(unsigned int *type)
	39	{
	40	*type = AUTOFS_TYPE_INDIRECT;
	41	return;
	42	}
	43
	44	static inline unsigned int autofs_type_indirect(unsigned int type)
	45	{
	46	return (type == AUTOFS_TYPE_INDIRECT);
	47	}
	48
	49	static inline void set_autofs_type_direct(unsigned int *type)
	50	{
	51	*type = AUTOFS_TYPE_DIRECT;
	52	return;
	53	}
	54
	55	static inline unsigned int autofs_type_direct(unsigned int type)
	56	{
	57	return (type == AUTOFS_TYPE_DIRECT);
	58	}
	59
	60	static inline void set_autofs_type_offset(unsigned int *type)
	61	{
	62	*type = AUTOFS_TYPE_OFFSET;
	63	return;
	64	}
	65
	66	static inline unsigned int autofs_type_offset(unsigned int type)
	67	{
	68	return (type == AUTOFS_TYPE_OFFSET);
	69	}
	70
	71	static inline unsigned int autofs_type_trigger(unsigned int type)
	72	{
	73	return (type == AUTOFS_TYPE_DIRECT \|\| type == AUTOFS_TYPE_OFFSET);
	74	}
	75
	76	/*
	77	* This isn't really a type as we use it to say "no type set" to
	78	* indicate we want to search for "any" mount in the
	79	* autofs_dev_ioctl_ismountpoint() device ioctl function.
	80	*/
	81	static inline void set_autofs_type_any(unsigned int *type)
	82	{
	83	*type = AUTOFS_TYPE_ANY;
	84	return;
	85	}
	86
	87	static inline unsigned int autofs_type_any(unsigned int type)
	88	{
	89	return (type == AUTOFS_TYPE_ANY);
	90	}
bb979d7f	91
5c0a32fc IK	92	/* Daemon notification packet types */
	93	enum autofs_notify {
	94	NFY_NONE,
	95	NFY_MOUNT,
	96	NFY_EXPIRE
	97	};
	98
	99	/* Kernel protocol version 4 packet types */
	100
	101	/* Expire entry (umount request) */
	102	#define autofs_ptype_expire_multi 2
	103
	104	/* Kernel protocol version 5 packet types */
	105
	106	/* Indirect mount missing and expire requests. */
	107	#define autofs_ptype_missing_indirect 3
	108	#define autofs_ptype_expire_indirect 4
	109
	110	/* Direct mount missing and expire requests */
	111	#define autofs_ptype_missing_direct 5
	112	#define autofs_ptype_expire_direct 6
1da177e4 LT	113
	114	/* v4 multi expire (via pipe) */
	115	struct autofs_packet_expire_multi {
	116	struct autofs_packet_hdr hdr;
	117	autofs_wqt_t wait_queue_token;
	118	int len;
	119	char name[NAME_MAX+1];
	120	};
	121
e8514478 IK	122	union autofs_packet_union {
	123	struct autofs_packet_hdr hdr;
	124	struct autofs_packet_missing missing;
	125	struct autofs_packet_expire expire;
	126	struct autofs_packet_expire_multi expire_multi;
	127	};
	128
5c0a32fc IK	129	/* autofs v5 common packet struct */
	130	struct autofs_v5_packet {
	131	struct autofs_packet_hdr hdr;
	132	autofs_wqt_t wait_queue_token;
	133	__u32 dev;
	134	__u64 ino;
	135	__u32 uid;
	136	__u32 gid;
	137	__u32 pid;
	138	__u32 tgid;
	139	__u32 len;
	140	char name[NAME_MAX+1];
	141	};
	142
	143	typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
	144	typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
	145	typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
	146	typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
	147
e8514478	148	union autofs_v5_packet_union {
1da177e4	149	struct autofs_packet_hdr hdr;
5c0a32fc	150	struct autofs_v5_packet v5_packet;
e8514478 IK	151	autofs_packet_missing_indirect_t missing_indirect;
	152	autofs_packet_expire_indirect_t expire_indirect;
	153	autofs_packet_missing_direct_t missing_direct;
	154	autofs_packet_expire_direct_t expire_direct;
1da177e4 LT	155	};
	156
	157	#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
5c0a32fc IK	158	#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
5c0a32fc IK	159	#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
1da177e4	160	#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
1da177e4 LT	161	#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int)
	162
	163
	164	#endif /* _LINUX_AUTO_FS4_H */